I start over 100 trays of seeds every year. These coir bricks are lightweight, easy to store, very compact and easy to move. SO much better than bagged started medium. No sticks, debris, clumps, etc. Hydrates quickly into a fluffy, light, moisture retentive mix. I love Gardeners Supply (and the phone people are just fantastic), but they're not cheap.

It's easy to store,works great& it's easy to use! Most of the seeds I started grew in this & some of the seeds were a few yrs. out of date! It does take a few minutes for it to soak up the water & expand ,so that you can use it ! But as it doesn't take up much space it's worth the wait!! I really like that it's a brick instead of a bag,that can spill & isn't easy to store!